Navigation Links
Through unique eyes, box jellyfish look out to the world above the water
Date:4/28/2011

Box jellyfish may seem like rather simple creatures, but in fact their visual system is anything but. They've got no fewer than 24 eyes of four different kinds. Now, researchers reporting online on April 28 in Current Biology, a Cell Press publication, have evidence revealing that four of those eyes always peer up out of the water, regardless of the way the rest of the animal is oriented. What's more, it appears that those eyes allow the jellies to navigate their way around the mangrove swamps in which they live.

"It is a surprise that a jellyfishan animal normally considered to be lacking both brain and advanced behavioris able to perform visually guided navigation, which is not a trivial behavioral task," said Anders Garm of the University of Copenhagen. "This shows that the behavioral abilities of simple animals, like jellyfish, may be underestimated."

In fact, scientists have known for more than a century that box jellyfish had a unique array of eyes. It was known that they could rely on vision to respond to light, avoid obstacles, and control their rate of swimming. But box jellyfish generally live in shallow waters with plenty of obstacles. The species Garm's team studied, Tripedalia cystophora, lives between the prop roots in Caribbean mangrove swamps, where they stay close to the surface to catch and eat copepods that gather in high densities in light shafts formed by openings in the mangrove canopy. They are never found out in the open, where they might risk starvation. That means they must stay within a rather restricted area, less than two meters wide. And it now appears that they have eyes that help them do this.

The researchers examined the function of one of two types of "upper lens eyes," already known to form images, to work out just what those eyes can see and how well. It turns out that those four eyes cover precisely the visual field needed to see through the water's surface up into the world above. The resea
'/>"/>

Contact: Elisabeth Lyons
elyons@cell.com
617-386-2121
Cell Press
Source:Eurekalert

Page: 1 2

Related biology news :

1. Through evolution, cavefish have lost sleep
2. Major breakthrough in preventing premature birth announced by NIH/WSU
3. From science fiction to research breakthrough
4. The way to (kill) a bugs heart is through its stomach
5. No scalpel: Minimally invasive breakthrough for men’s enlarged prostates improves symptoms
6. Breakthrough in Niemann-Pick Type C research reported by Notre Dame and Cornell scientists
7. San Diego Zoo Global joins effort to conserve the Amazonian rain forest through Peru field station
8. Researchers looking at a rare disease make breakthrough that could benefit everyone
9. Cancer breakthrough to prevent heart failure and increase survival rates
10. Breakthrough on cystic fibrosis 1 step closer as new research alliance formed
11. Biomedical breakthrough: Blood vessels for lab-grown tissues
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... 2014 Research and Markets ( ... "iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 ... their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... in July 2012, Apple introduced the fingerprint reading ... the only device of Apple incorporating such a ...
(Date:12/19/2014)... 2014   LaunchKey , the first decentralized mobile ... Internet of Things era, today announced the close of ... was led by Metamorphic Ventures with participation from ENIAC ... and others.  LaunchKey has raised $4 million to date, ... team and bring LaunchKey to market in 2015. ...
(Date:12/17/2014)... Dec. 15, 2014  HITLAB SM announced ... (GCP) audit to confirm its adherence to current ... accomplishment enables HITLAB to conduct regulated smart device ... principles for patient safety and research quality. ... access, quality, and delivery with innovative technology," said ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... the first time, demonstrated that mercury concentrations in fish respond ... The international teams research began in 2001 at the ... weeks Proceedings of the National Academy of Sciences. Up ... because of all the other factors that affect mercury levels ...
... have determined the three-dimensional structure of an unusual viral ... viruses. The Paramecium bursaria chlorella virus infects a ... cells. Once inside the chlorella, the virus DNA makes ... structural proteins that are assembled to create the outer ...
... smoking-cessation drug will enable you to quit smoking may ... from the Centre for Addiction and Mental Health (CAMH). ... journal Biological Psychiatry, found that the enzyme known to ... is highly genetically variable in all ethnicities and influences ...
Cached Biology News:International team shows mercury concentrations in fish respond quickly to increased deposition 2Scientists learn structure of enzyme in unusual virus 2New genetic research into nicotine addiction shows promise for personalized treatment 2
(Date:12/24/2014)... 2014 Earlier this year in a ... director of the Adult Stem Cell Technology Center, LLC ... and under appreciated unique property of adult tissue stem ... Cells: Misunderstood in the Past, Important for the Future,” ... He gave the address at the 4th World ...
(Date:12/24/2014)... Tenn. (PRWEB) December 23, 2014 Nashville ... was elected treasurer for the American Society for ... advancing knowledge and research in reproductive medicine. In ... a seat on the executive board and will have ... , Dr. Hill has actively supported ASRM since 1984 ...
(Date:12/24/2014)... PharmaBoardroom,s new report, , ... available for free download , digs deep into this ... in the sector today. One area where ... in developing a homegrown pharmaceutical manufacturing base, even if the ... some way off. A cursory comparison with neighboring ...
(Date:12/22/2014)... 22, 2014   Synthetic Biologics, Inc. ... pathogen-specific therapies for serious infections and diseases, ... today announced positive topline safety and tolerability ... of SYN-004, the Company,s investigational oral beta-lactamase ... difficile (C. difficile) infection, antibiotic-associated diarrhea ...
Breaking Biology Technology:Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 2Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 3Adult Stem Cell Technology Center, LLC’s Director Sherley's Address on What’s Holding Back Regenerative Medicine Featured on Omics Group Website 4Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 2Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 3Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 4Synthetic Biologics Announces Positive Topline Results from Phase 1a Trial of SYN-004 for the Prevention of C. difficile Infection 5
... Viragen, Inc. (OTC,Bulletin Board: VRAI) and its ... VRGE), today jointly announced,that Viragen International,s wholly-owned ... an application seeking protection under the,bankruptcy laws ... alpha interferon. The bankruptcy application was ...
... at 10:30 ET, 7:30 PT, EMERYVILLE, Calif., Sept. ... today announced its financial,results for its fiscal fourth quarter ... 1-for-7 reverse split of its common stock. For ... million, a,44% increase over last year,s revenue of $12.3 ...
... Germany, Sept. 14 Indivumed announces today,that a ... Within,this agreement Indivumed will apply its automated immunohistochemistry,service ... in the,area of oncology. Indivumed will provide for ... its tumor biobank as well as specifically,collected clinical ...
Cached Biology Technology:Viragen International's Subsidiary, ViraNative AB, Files to Seek Bankruptcy Protection in Sweden 2Neurobiological Technologies, Inc. Reports Fourth Quarter and Fiscal Year-End Financial Results for 2007 Announces 1-for-7 Reverse Stock Split 2Neurobiological Technologies, Inc. Reports Fourth Quarter and Fiscal Year-End Financial Results for 2007 Announces 1-for-7 Reverse Stock Split 3Neurobiological Technologies, Inc. Reports Fourth Quarter and Fiscal Year-End Financial Results for 2007 Announces 1-for-7 Reverse Stock Split 4Neurobiological Technologies, Inc. Reports Fourth Quarter and Fiscal Year-End Financial Results for 2007 Announces 1-for-7 Reverse Stock Split 5Neurobiological Technologies, Inc. Reports Fourth Quarter and Fiscal Year-End Financial Results for 2007 Announces 1-for-7 Reverse Stock Split 6
...
Buckets for 2 racks of 5 tubes, type Stago/Hitachi...
... The MBS Satellite Thermal ... and flexible solution for medium ... The MBS combines the latest ... friendly software and PC control, ...
... The AccuSpot automates LC microfractionaction, spotting ... With the AccuSpot system, LC eluent can ... plates, in trace amounts (eg.50nl). Matrix solutions ... automatic preparation of target plated for MALDI-TOF-MS ...
Biology Products: